Ignition device for internal-combustion engines



April 29 1924-.

W. GRUNQW IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINES Filed April'7, 1919 3 Sheets-Sheet 1 April 2 1924 W. GRUNQW IGNITION QEVICE FORINTERNAL COMBUSTION ENGINES Filed April '7, 1919 3 Sheets-Sheet 2 April29, 1924.

W. GRUNOW lGNITION DEVICE FOR INTERNAL COMBUSTION ENGINES Filed April 7,1919 5 Sheets-Sheet 5 IIIII'II Patented Apr. 29, 1924.

"WILLIAM enunow, or NEWARK, nnwrsnsnr, Assrenon TO srrirrnoar ELECTRICALCOMPANY, or nnwann, new, asnsnr, A conronarron or new annsnr.

IGNITION DEVICE FOR INTERNAL-COIMBUSTION ENGINES.

Application filed April 7, 1919. Serial No. 288,152.

T aZZw/wm it may concern. iv

Be it known that i, iterati Gnunow, a citizen of the United States,residing at Newark, in the county of Essex, State of N ew Jersey, haveinvented certain new and.

useful Improvements in Ignition Devices for Internal-Combustion Engines,of which the following is a description, reference being had to theaccompanying drawing and to the figures of reference marked thereon.

The invention relates to new and useful improvements in ignitiondevices, and more particularly to an ignition device having a fixed anda movable electrode, to which current is supplied by a magnetogenerator.

An object of the invention is to provide tion to each other as beforeremoval, so that the synchronism of the partswill be insured. A furtherobject of the invention is to provide an ignition device of the abovecharacter with independent supportingbrackets, one of which carries theelectrodes and the other the magneto generator and to provide means forpositioning said brackets relative to each other and also to provide aconstruction of bracket for the magneto generator which may be readilymade from stamped sheet metal. These and other objects will in part beobvious and will in part be hereinafter more fully disclosed. i

In the drawings which show by way of illustration one embodiment of theinventioni Figure l is a view partly in side elevation and partly insection, showing my improved brackets with the parts of the ignitiondevice assembled thereon; t

Figure 2 is a front view oft-he same, but

will be positioned in precisely the same relashowing the magnetogenerator removed; Figure 3-is a top plan view of the parts shown inFigure 2;

Figure 4 is a View showing the blank after it is cut and before theparts are bent so as to form the bracket for supporting the generator;

The invention consists broadly in a supporting means for the electrodesand the magneto generator. In the present embodiment of the invention, Ihave provided two supporting brackets which are entirely independent ofeach other in the sense that when the brackets are removed'from theengine they are disconnected. On one of the brackets is mounted theelectrodes and one of the electrodes is preferably movable, relative tothe other, for producinga spark. On the other bracket is mounted themagneto generator. The bracket for supporting the magneto generator isformed of sheet metal, which is cut into proper shape and then bent soas to provide a supporting base part which is adapted to be attached tothe engine cylinder, and a projecting shelf on which the magnetogenerator is mounted. This sheet metal blank from which the bracket isformed is provided also with suitable lugs to which the generator may bebolted and suitable projecting arms which serve to support certain ofthe parts 00- operating with the actuating devices.

The supporting base of the bracket is formed with an opening whichisadapted to receive the projecting end of the igniter block and theprojecting end of the igniter block is shaped to conform with theopening inthe bracket, so that when the projecting end of the igniterblock is placed within. said opening, saidigniter block will have adefinite predetermined position relative to the bracket carrying thegenerator. erably, the two brackets are secured to the engine cylinderby the same bolts which pass through "alined holes in the two brackets.By this'construction thetwo brackets may. be. removed fromthe enginecylinder and when removedthey are separate and independent of eachother. The bracket carrying the movable electrodes may be im mersed ingasoline,or any other cleaning fluid, and the electrodes thoroughlycleaned. After, the 4 parts have been thoroughly Prefher and the movableelectrode will not be disturbed. V 7

Referring more in detail to the drawings,

my improved ignition device consists of a sheet metal supporting bracket1, on which the megneto generator, indicated at G, is mounted, and asecond supporting bracket 2, in which the electrodes are mounted. The

'fixed electrode'is indicated at 3 in the drawings, and the movableelectrode is indicated at 4. These electrodes are provided with theusual igniter points which arebrought into engagement and are separatedto pro duce a spark. The bracket2 has a projecting flange 5, which isformed with bolt holes 6, through which bolts 7-7 are adapted to bepassed, which bolts are threaded into the engine cylinder, indicated atC in the drawings. A suitablepad 8 may be used in order to make the:joint between the igniter block or bracket and the cylinder a tightjoint.

In Figure 4; of the drawings, I have shown the blank 1 after it isstamped and before it is folded in order to produce the bracket. Saidblank has a part 9 which forms the supporting base for the bracket.Projecting outwardly from this base 9 are arms 10-10 which are bentatright angles to the supporting base and into parallel relation to eachother. The end portions 1.111 of the arms are then bent at right anglesto the arms 10-10, and may be riveted togetheror welded together, orsecured in any other suitable way, thus forming a strengtheningconnection between the arms. Projecting from the arms l10 are auxiliaryarms or'lug's 12-12. These are bent downwardly into a horizontal plane,as indicated in Figure 1, and bolts 13.-13 pass through suitableopenings, respectively, formed in said arms and these bolts are threadedintothe base of the generator G and serve as a means for'firmly securingthe generator to the arms -40. As clearly shown inFigure 2 of thedrawings, the generator is directly abovethese parts 12 -12 and alsodirectly above and rests upon the arms 1010. The generator is providedwith a current generating member,.such. as an armature, and the shaft ofthis current generating member is indicated at 14: inthe drawings.Secured to this shaft 1 1 is a sleeve715, which is formed with aclownwar'dly projecting arm 16 adapted to be engaged by a push rod 17the end of which is indicated in'dotte'd lines in Figure 2.

Fixed to the shaft carrying the movable electrode 4 is a sleeve A spring19's'urrounds the sleeve 18 and is fixed at one end to a pin 20 carriedby said sleeve 18. This spring is secured at its other end to the arm 16and serves as a means for rotating the armature. The sleeve 15 isprovided with a projecting toot-h 21, which is adapted to co-operatewith a'projecting tooth 22 on the sleeve 18. t r

A post 23 is secured to an arm 24 formed as a part of the bracket 1, andthis post is provided with a spring buffer 25 against which the arm 16normally rests.

Asecond arm 2 1 is provided andwelded or otherwise secured to the arm24:, when the bracket has been bent into proper form, so as tostrengthen the arm 24 to prevent the same from being bent out of itsproper plane due to percussions on the post 23. V V

The actuating mechanism for the generator and the movable electrode formno part of my invention. and furtherdetail descriptionthereof is notthought necessary. It may be stated that the push rod 17 operating uponthe arm 16 compresses the spring 19 which forces the electrodestogether, and r when the arm 16 is tripped by the push rod being knockedoff from engagement therewith, the spring will rotate the sleeve15until'the arm 16 strikes the buffer and as this buii'er is yieldable, itwill give so that thesleeve 15will move to a point to bring the tooth21, carried thereby, into engage- V ment with the tooth 22 on the sleeve18, and

this will rotate the sleeve 18 sufficiently to separate. the electrodesto produce a spark. The yielding buffer moves the tooth 21 out ofengagement with the tooth 22 when the parts resume their normal positionand the spring 19 will hold the contacts together,

so that normally the contact points are to 'gether and properly shleldedfrom carbon housing within which a rod 27 may slide,

said rod carrying the push rod proper 1 7 The supportingbase 9 ofthebracket 1 is formed with bolt holes 28. These bolt holes are inalinement with the bolts 6 in the bracket 2, and the boltv holes 7- 7pass through the bolt holes, so that both brackets are secured by thesame bolts.

It will be obvious from the above descriptionthat'I have provided anignition de- 5 vice, wherein the magneto generator is carried by abracket which is entirely'independent of the bracket which supports thesame fixed relation to each other duringthel operation of the engine,and,'1f the brackets are removed for the purpose of cleaning theelectrodes, or for the purpose of replacing the electrodes, then thebrackets when replaced will always be set in this samefixed relation toeach other that'they had when the parts were adjusted,'and, therefore,the synchronism of the parts will not be disturbed. liurthermore, it issometimes desirable to replace the electrodes, and by my improvedconstruction, where the igniter block is independent of the main bracketsupporting the generator, this igniter block may be quickly replacedwithout requiring the use of a new bracket for the-generator. Also, bymy improvement the generating supporting bracket may be made of sheetmetal. Vfhere brackets of this character are cast they are often veryweak, owing to some defect in the casting, and readily become broken. Bymy improvement, however, where the bracket is formed of sheet metal,these imperfections in construction are completely avoided. Each bracketwill be strong and durable and at the same time may be cheaply made.

It is to be noted that the bracket 2 is provided with a projection 2which extends into and fits the rectangular shaped opening 1"* in thebracket 1. This opening in the bracket 1 fitting the projection 2insures that the two brackets when placed together will have apredetermined fixed position relative to each other irrespective of thesize of the bolt holes. When the brackets are removed from the enginethey at once become separated but when replaced on the engine theprojection fitting into the opening will reposition the bracket 1 inexactly the same position in which it was set before it was taken offthe engine. This enables the synchronism of the parts to be restored ormaintained when the brackets are replaced after they have been separatedor taken from the engine. On the other hand, the brackets may readily beseparated and the part carrying the electrodes immersed in gasoline forcleaning, as noted above.

While I have an opening in one bracket surrounding a projection on theother, it will be understood that my invention is not limited to theparticular way in which I bring about this positioning of one bracketrelative to the other and that various ways will at once suggestthemselves-for maintaining or repositioning the brackets so that theywill be in exactly the H same predetermined position as they'were whenremoved from the engine. I Y I It is obvious that'minor changes in thedetails of construction and the arrangement of parts may be made withoutdeparting from the spirit of the invention, as set forth in the appendedclaims. 7 1 'Having thus descrlbed my invention, what I claim asnew anddesire to secure by Letters Patent, is: I

1.Anigniti0n device including in combination, a. supporting'bracket, afixed and a movable electrode carried thereby, a sec- 0nd supportingbracket, a magneto generator carried by said second bracket, and

means for securing the brackets to the engine cylinder, said bracket forthe magneto generator having an opening formed there-' in adapted tosurround and closely fit a projecting part of the supporting bracket forthe electrodes, whereby said brackets are held in fixed relationto eachother. 7

2. An ignition device including-in combination, a supporting bracket, afixed and a movable electrode carried thereby, said supporting brackethaving a forwardly projecting portion and a flange portion formed withbolt holes, a second supporting'bracket, a magneto generator carried bysaid second bracket, said second bracket having an opening formedtherein adapted to surround and closely fit the projection on the firstnamed bracket and having bolt holes in alinement with the bolt holes inthe first named bracket, whereby bolts may be inserted into the enginecylinder for securing both brackets thereto.

3. An ignition device including in combination, a supporting bracket, afixed and a movable electrode carried thereby, said supporting brackethaving a forwardly projecting portion, a second bracket, a magnetogenerator mounted thereon, said second bracket having a supporting baseprovided with an opening surrounding and closely fitting the forwardlyprojecting portion of the first named bracket, said second brackethaving a shelf formed integrally with said base portion on which themagneto generator is mounted, and means for securing said shaped andbent so as to form a support-- ing base, and parallel armsprojectingfrom the sides of-said supporting base, said arms beingsecured together attheir forward ends and having inwardly projectingperforatedlugs through which bolts may be inserted for securingthemagneto generator on said 6. A sheet metalbracket for a magnetogenerator ignition. device comprising a supporting base having theloweredge inturned and resting against the engine cylinder, arms projectingfrom the opposite sides of said, supporting base and in'parallel relation to each other,cinwardly projecting perforated lugs through whichthe bolts 111a be passed for securing the generator to said arms, saidarms having their extreme outer ends bentv toward each other andconnected together;

7. A sheet metal bracket for a magneto generator ignition devicecomprising a sup ortin base havin the lower ed e inturned b i b b i andresting against the enginer cylinder,

arms projecting from the opposite sides of said supporting base and inparallel relation to each other, inwardly projecting perforated lugsthrough which the bolts may be passed forsecuring the generator to saidarms, said arms having their extreme cuter ends bent toward eachotherandconnected together, one of said arms having an inwardly projecting lugonwhich a post may be supported carrying a partco-operating with theoperating mechanism for the 'magneto.

8LA sheet metal bracket for a magneto generator ignition devicecomprising a sup- 7 f portingbase having the lower edge inturned andresting against the engine cylinder, 7 arms projecting from the oppositesides of said supporting base and in paral1elrelation to each other,invvardly'projecting perforated lugs through which bolts may be passedfor securmgvthe generator to said arms, Silld arms having the1r extremeouter 7 ends bent toward each other andaconnected together, saidsupporting base having a rectangularropening formed therein adapted toreceive a projecting'part on the bracket on which the'electrodes of theignition device are mounted. 7

In testimony whereof, I affix my signature. r

WILLIAM GRUNOW.

